Absorber material for a solar collector for collecting solar energy comprises a multiple layer structure which utilizes iron as the base material or other easily accessed material depending on its emission properties

摘要

Absorber material comprises a multiple layer structure which utilizes iron as the base material or other easily accessed material depending on its emission properties and achieving the required high emission coefficient. The bulk material is coated with a thin but optically thick layer of a metal having a low emission coefficient. Preferred Features: The metal to be applied is gold, silver, copper or aluminum. The layer producing the low emission is applied on one or both sides.